Trellis – 3D mesh generative model • Hacker News Board

Re: Trellis – 3D mesh generative model

#81

Post by plasticeagle » Tue, Dec 10, 2024, 9:14 PM UTC

dusted wrote: post #42

Wow, that's amazing.. I think this is the first time I've felt sick to my stomach watching AI generated content.. A sadness rush over me. Because these look so good, like every soul-less super-high quality shovel-ware asset ever made. I'm not putting it down, it truly is an amazing achievement, and it feels like it marks the end of hand-made assets. I don't even feel bad for the artists, I just feel bad for myself, b…

Do not worry.

Art is much more than pictures on your monitor. If you want pieces of art, made by your peers, visit your local galleries and buy it. I don't know who you are or where you live, but I'm willing to bet that where-ever it is those local galleries exist - and the artists that exhibit there would love to sell some of their work.

And you can be sure that human-made art will remain, and be valued, because art is what humans love to make most of all.

Re: Trellis – 3D mesh generative model

#82

Post by RugnirViking » Tue, Dec 10, 2024, 11:06 PM UTC

hmm. Been using this fascinated for the past few hours, work-shopping workflows. The biggest oversight I see so far is merging points by distance. its the first step I have to do every time I bring it into blender

Re: Trellis – 3D mesh generative model

#83

Post by nickpinkston » Wed, Dec 11, 2024, 8:29 PM UTC

unholiness wrote: post #80

nickpinkston wrote: post #71

Anyone see anything like this for GenAI for BREP CAD? This is using meshes which seem a lot easier, and I'm unsure who's working on BREP or at least models that have some feel for dimensions and physics. ie It could still be meshes, but the designs would be physically reasonable like how a skilled tradesperson may make a device with their intuition without running FEA, etc.

As excited as I am about this jump from the fuzzy NeRFs/gaussian splatting to real meshes, I'm not holding my breath for BREP generation. Mesh to BREP has always been fraught because for anything beyond "find the cylinders", it becomes really subjective what a good representation is, and your average mesh likely doesn't have any simple representation that captures the full organic shape with analytic definitions. Wit…

I'm sympathetic to using mesh approaches, hence the last part of my comment focusing more on the physics, etc. vs. requiring BREP.

The main advantages of BREP are:

(1) You capture design intent because of the explicit dimensioning and constraint model, which of course is still not used enough and 2D drawings are useful.

(1a) This intent is often needed (even if just implicitly) during the manufacturing process as machinists, toolmakers, etc. + their software (CAM, G-Code, etc.) convert them into physical parts.

(2) They are human understandable and editable.

(3) The legacy ecosystem uses old CAD, and it's very hard to switch - ie Boeing isn't putting 777 in a new CAD unless it has some massive advantage.

So having BREP, or perhaps a mixed approach like you suggest with the feel of BREP (feature tree, direct modeling, etc.) approach would ease the transition.

Re: Trellis – 3D mesh generative model

#84

Post by timmattison » Wed, Dec 11, 2024, 9:16 PM UTC

pythonaut_16 wrote: post #74

dusted wrote: post #63

Earlier quoted context omitted.

> A significant portion of game developers hate level design And that shows, that really, really shows :) Now they get to make even more of the soul-less trash in shorter time.. I'm not putting this tool down, it's an amazing technical achievement, and the results are absolutely mind-blowing, but, to me, it is what it is, and it's just like, my opinion, dude, not some statement of absolute truth. You hating level des…

Do you find it soulless when painters don’t mix their own paints or weave and stretch their own canvases? Is it soulless when a sculptor doesn’t source their own clay and marble directly from the earth? Or when a musician uses an instrument made by someone else, or a composer uses digital sounds recorded by someone else? There are many different forms of artistic expression and many rely on relatively mechanical and…

Agree with this on many levels. Some people idolize movie directors but in the most simplistic view everyone else is doing the “real work”.

Not everyone needs to do everything. And if someone’s amazing idea can get out of their head and onto paper/film/video or into a game I’m all for it.

There will be a lot of AI shovelware junk. But it doesn’t all have to be that way. Now more people compete on larger landscape of ideas.